Home / Instruments / View Violins / A Roger Hansell Violin after Joseph Filius Andrea Guarneri (2019) A Roger Hansell Violin after Joseph Filius Andrea Guarneri (2019) A Roger Hansell Violin after Joseph Filius Andrea Guarneri (2019) Information A pretty violin built on our favourite Joseph Filius Andrea Guarneri pattern. Length of back – 354mm Stop length 195mm Bottom bout – 201mm Middle bout – 110mm Top bout – 163.5mm Stamped with the bridge stamp on the upper and lower blocks inside.